| Catalytic activity of Au/Fe-PILC and Au/Fe-oxide catalysts for catalytic combustion of formaldehyde |
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| 作者姓名： | 李常艳 沈岳年 胡瑞生 李沛培 张军 |
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| 作者单位： | [1]College of Chemistry and Chemical Engineering, Inner Mongolia University, Huhhot 010021, China [2]Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730050, China |
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| 基金项目： | Projects （20263001, 20601012） supported by the National Natural Science Foundation of China; Project （ND412） supported by Inner Monc,olia University Youth Foundation, China |
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| 摘 要： | Iron polymeric hydroxygroups pillared clays （Fe-PILC） were prepared by Na^＋-montmorillonite with iron pillaring agent. 2.01Au/Fe-PILC catalyst was obtained by deposited-precipitation （DP） method. 2.52Au/Fe-oxide catalyst was prepared by co-precipitation method. The catalytic activity of these catalysts was measured by catalytic combustion of formaldehyde. The catalyst of 2.01Au/Fe-PILC exhibits the high catalytic activity. The catalytic combustion reaction of formaldehyde proceeds at considerable rates at 20 ℃ and complete burn-off of formaldehyde is achieved at 120 ℃. The structure of catalysts, the valence state of gold and the size of gold particles were investigated by means of X-ray powder diffractometry, X-ray photoelectron spectroscopy and transmission electron microscopy. The results show that gold atoms with partially positive charge exist in the catalyst and play an important role in the catalytic activity. In addition, nano-sized, well-dispersed gold particles and good adsorption properties of support are necessary to obtain high activity Au catalysts for catalytic combustion of formaldehyde.
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| 关 键 词： | 甲醛 催化燃烧 催化剂 催化活性 金 铁 |
| 收稿时间： | 2007-07-15 |
| 修稿时间： | 2007-09-10 |
Catalytic activity of Au/Fe-PILC and Au/Fe-oxide catalysts for catalytic combustion of formaldehyde |
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| LI Chang-yan , SHEN Yue-nian , HU Rui-sheng , LI Pei-pei ZHANG Jun.Catalytic activity of Au/Fe-PILC and Au/Fe-oxide catalysts for catalytic combustion of formaldehyde[J].Transactions of Nonferrous Metals Society of China,2007,17(A02):1107-1111. |
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| Authors: | LI Chang-yan SHEN Yue-nian HU Rui-sheng LI Pei-pei ZHANG Jun |
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| Abstract: | |
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| Keywords: | Au/Fe-PILC catalyst catalytic combustion of formaldehyde gold with positive charge gold nanocrystals |
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